Well guys i just put my new MAC o/r H pipe on after it took me forever, and o man it is sooooooooooooo loud! The pipe and the flows make the 98 stang sound mean, even though we dont have much hp. i was thinking though and i think its kind of toooo loud. I about woke up the whole neighborhood going to work the other morning. So i was thinking about riding over to my local mustang shop and asking if they can place high flow cats on the o/r MAC H. Do any of you know if they can do that, or would it be stupid to even ask em. I really dont want to spend about 400 and some change on a catted H pipe, and i dont really want to put the stock H back on, so do you guys think this can be done, or should i just scrap this idea. If anyone has some info please fill me in on details.......Thanks.